When comparing Casual vs To Round, the Slant community recommends To Round for most people. In the question“What are the best cross-platform task apps?” To Round is ranked 57th while Casual is ranked 67th. The most important reason people chose To Round is:
The interface is clear and smooth.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Tracks task dependencies using a graph
Pro Great to-do templates
Every to-do list & project can be saved as an amazing template that you can re-use in the future.
Pro Offers a high-level overview of projects
The workflow with dependencies shows where the things are at a glance. No more frustrations of how your project is going and who is doing what.
Pro Sync deadlines to Google Calendar
To-do items can be integrated with your day-to-day schedule using Google Calendar.
Pro Visual way of organizing your work
The workflow includes dependencies and shows you where things are at a glance.
Pro Easy to use
The interface is clear and smooth.
Pro Unique and interesting design
The bubble design format is simple to understand visually and is effective in keeping track of ones to-do list.
Pro Gamification of tasks
To Round turns task-completion into a game-like experience, which is good for those who are motivated by this type of positive feedback. It can be a little distracting or annoying for users who want an even simpler process.
Pro Convenient widget
The app features an Android widget that you can place on your homescreen to view your current tasks even more quickly.
Pro Good reminder feature
You can enable push notifications that make sure you never forget a single task.
Pro Visualisation of tasks
The app uses bubbles to represent tasks. The bigger the bubble, the more important the task is.
Cons

Con Price
At its cheapest level, Casual is $9 per month for two users and two GB of storage. The trial period is short and there is no free version.
Con No web-based access
The website demonstrates how the app works, but doesn't allow you to access any of your own to-dos.
Con No desktop app
So far no apps for desktops have been launched.
